Posts are decentralized and uncensorable. Only way someone censors you is they mute you, meaning they won’t see your note but everyone else will. I think relays could cut you off, but as long as you are using multiple relays, your pretty much uncensorable to the NOSTRVerse.

One thing to remember, there is no delete. If you say it, it lives on forever. The wallet question will take a little more to answer but will follow back up on it.